Anatomy and Cell Biology 3309 Lecture Notes - Lecture 5: Endolymphatic Duct, Glycoprotein, Afferent Nerve Fiber
6 Jul 2016
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Inner ear is a continuous structure, which includes the cochlea and then the vestibular organ; consists of saccule, utricule, and 3 semi circular ducts. These structures together are called the membranous laberynth (suspended in bone). The membranous labyrinth is suspended in the perilymph, ie osseous labyrinth is filled with perilymph and within the perilymph filled cavity the membranous labyrinth. The cochlea has two perilymph filled spacecs (scala vestibule and tympani. In between these twi soaces we have the cochlear duct which is filled with endolymph. In the diagram, cohlear duct in blue is filled with endolymph and this endolymph is connected through the ductulus reuniens to the saccule and utricule. The utricle gives rise to the 3 semi circular ducts. Within the endolymph space we find the sensory structures which pick up mechanical force and convert it to a neuro signal. In yellow we have the organ of corti with sits on the basilar membrane within the endolymph filled space.
